全球智库信息集成服务系统(G2TT): Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality?

G2TT

来源类型	Monograph (IIASA Interim Report)
规范类型	报告
	Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality?
	Barot S; Heino M; Morgan MJ; Dieckmann U
发表日期	2005
出版者	IIASA, Laxenburg, Austria: IR-05-015
出版年	2005
语种	英语
摘要	To interpret long-term trends in age and size at maturation, new statistical methods have recently been devised for estimating probabilistic maturation reaction norms based on data collected for the management of fisheries. Here we apply these methods to three Newfoundland stocks of American plaice (NAFO Divisions 2J3K, 3LNO, 3Ps) and report a clear long-term shift in the maturation reaction norms of these stocks towards maturation at younger age and smaller size. Theory predicts such trends could result from fishing acting as a selective force, inducing evolutionary changes in the life histories of exploited populations. Matching long-term trends in maturation reaction norms have already been documented for several stocks that have experienced high fishing pressures (Gulf of Maine and Georges Bank cod, Northeast Arctic cod, North Sea plaice). Our results add a new dimension to these earlier findings: since fishing pressures for two stocks of Newfoundland plaice (2J3K and 3Ps) have been relatively low, our results imply that fishing is likely to result in the evolution of life histories even when fishing mortality is low, or that natural mortality has played an important role in determining selective pressures in these populations. Both options suggest that conditions for rapid life-history evolution in exploited stocks are less restrictive than previously appreciated.
主题	Adaptive Dynamics Network (ADN)
关键词	American plaice Logistic regression Maturation dynamics Maturity ogive Probability of maturing Reaction norm
URL	http://pure.iiasa.ac.at/id/eprint/7820/
来源智库	International Institute for Applied Systems Analysis (Austria)
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/125452
推荐引用方式 GB/T 7714	Barot S,Heino M,Morgan MJ,et al. Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality?. 2005.

条目包含的文件
文件名称/大小	资源类型	版本类型	开放类型	使用许可
IR-05-015.pdf（667KB）	智库出版物		限制开放	CC BY-NC-SA	浏览